The Experts below are selected from a list of 39474 Experts worldwide ranked by ideXlab platform
Anna Nagurney - One of the best experts on this subject based on the ideXlab platform.
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a game theoretical approach to the vertical coexistence of small and big fish
Ecological Modelling, 2012Co-Authors: Christian Mullon, Anna NagurneyAbstract:Abstract An abstract model of a pursuit-evasion game using tools from Network Economics is presented. Animal moves are represented as human migrations: people move to destinations that they find agreeable to migrate to and the associated decision-making depends on the specific characteristics of the location that they come from, the place that they migrate to, the distance between both, but also on the density and the characteristics of the other members of the human population living there. This competitive behavior results in a simple non-cooperative game. The repetition of this game, in turn, yields a dynamical system, the equilibrium of which may be computed using variational inequality tools. These ideas are implemented in the model of a vertical marine ecosystem in which big fish pursue small fish that try to evade, with the small fish preferring to live in surface and with the big fish preferring to reside in depth. The theoretical and computational results suggest that the specific trade-offs for both pursuers and evaders are important for the stability and the permanence of ecosystems. Then, we discuss how this quite simple model could be a first step toward a game theoretical formalization of the connectivity of marine ecosystems, which is an important and open question in marine ecology.
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supply chain Network Economics dynamics of prices flows and profits
2006Co-Authors: Anna NagurneyAbstract:This text brings an Economics perspective to the decision-making that happens in the management of supply chains. The author provides the foundations for the modeling of the interrelationships among decision-makers in supply chains. These models include both competition and cooperation and provide the resulting product flows and prices in the chains. The author begins with an introduction of the theoretical foundations, then applies the theory to energy supply chains in the form of electric power generation and distribution Networks. Subsequent chapters cover environmental supply chain and financial Networks with intermediation, dynamics under risk and uncertainty, power plant selection, reverse supply chain management and e-cycling. Throughout the book, the underlying thread is that of transportation Networks and how the relationships between supply chain Networks and the more-established theory of transportation Network equilibria can be used for logistics.
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supply chain Network Economics
Books, 2006Co-Authors: Anna NagurneyAbstract:This book is the first to bring an Economics perspective in a rigorous manner to complex decision-making in the management of supply chains. It provides the foundations for the modeling of the interrelationships among decision-makers in supply chains, ranging from manufacturers, distributors, and retailers, to the consumers, assuming individualized behavior. The models handle both competition and cooperation and provide the resulting product flows and prices in the chains. A unique Network Economics perspective is brought to the issue, setting the book apart from the numerous management and operations research volumes available.
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Network Economics a variational inequality approach
1992Co-Authors: Anna NagurneyAbstract:Preface. I: Theory and Fundamentals. 1. Variational Inequality THeory. 2. Algorithms. II: Partial Equilibrium - Perfect Competition. 3. Spatial Price Equilibrium. 4. Traffic Network Equilibrium. 5. Migration Equilibrium. III: Partial Equilibrium - Imperfect Competition. 6. Oligopolistic Market Equilibrium. 7. Environmental Networks. 8. Knowledge Network Equilibrium. IV: General Equilibrium. 9. Walrasian Price Equilibrium. 10. Financial Equilibrium. V: Estimation. 11. Constrained Matrix Problems. A. Problems.
Oz Shy - One of the best experts on this subject based on the ideXlab platform.
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A Short Survey of Network Economics
Review of Industrial Organization, 2011Co-Authors: Oz ShyAbstract:This article surveys a variety of topics that are related to Network Economics. Topics covered include: consumer demand under Network effects, compatibility decisions and standardization, technology advances in Network industries, two-sided markets, information Networks and intellectual property, and social influence.
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a short survey of Network Economics
Research Papers in Economics, 2010Co-Authors: Oz ShyAbstract:This paper surveys a variety of topics related to Network Economics. Topics covered include: consumer demand under Network effects, compatibility decisions and standardization, technology advances in Network industries, two-sided markets, information Networks and intellectual property, and social influence.
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The Economics of Network Industries
2001Co-Authors: Oz ShyAbstract:This book introduces upper-level undergraduates, graduate students, and researchers to the latest developments in Network Economics, one of the fastest-growing fields in all industrial organization. Network industries include the Internet, e-mail, telephony, computer hardware and software, music and video players, and service operations in the banking, legal, and airlines industries among many others. The work offers an overview of the subject matter as well as investigations about specific industries. It conveys the essential features of how strategic interactions between firms are affected by Network activity, as well as covering social interaction and its influence on consumers' choices of products and services. Virtually no calculus is used in the text, and each chapter ends with a series of exercises and selected references. The text may be used for both one- and two-semester courses.
Christian Mullon - One of the best experts on this subject based on the ideXlab platform.
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a game theoretical approach to the vertical coexistence of small and big fish
Ecological Modelling, 2012Co-Authors: Christian Mullon, Anna NagurneyAbstract:Abstract An abstract model of a pursuit-evasion game using tools from Network Economics is presented. Animal moves are represented as human migrations: people move to destinations that they find agreeable to migrate to and the associated decision-making depends on the specific characteristics of the location that they come from, the place that they migrate to, the distance between both, but also on the density and the characteristics of the other members of the human population living there. This competitive behavior results in a simple non-cooperative game. The repetition of this game, in turn, yields a dynamical system, the equilibrium of which may be computed using variational inequality tools. These ideas are implemented in the model of a vertical marine ecosystem in which big fish pursue small fish that try to evade, with the small fish preferring to live in surface and with the big fish preferring to reside in depth. The theoretical and computational results suggest that the specific trade-offs for both pursuers and evaders are important for the stability and the permanence of ecosystems. Then, we discuss how this quite simple model could be a first step toward a game theoretical formalization of the connectivity of marine ecosystems, which is an important and open question in marine ecology.
P D Kaushik - One of the best experts on this subject based on the ideXlab platform.
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Network Economics and the digital divide in rural india
2007Co-Authors: Jake Kendall, Nirvikar Singh, Kristin Williams, Yan Zhou, P D KaushikAbstract:The idea of a global digital divide is well accepted, and cross-country studies of determinants of differences in computer and Internet penetration have identified income, telecommunications infrastructure, and regulatory quality as key influencing factors. The policy implications from these studies are relatively blunt: get richer, have more telephones, and regulate telecommunications better. In this paper, we examine an alternative policy approach to bridging the digital divide, through organizational innovations that provide low cost Internet access in developing countries, within the existing levels of income, telecommunications infrastructure and regulatory environment. We use survey data from 500 individuals in four states of India: Haryana, Madhya Pradesh, Punjab and Rajasthan, to examine factors influencing patterns of computer and Internet use. The situations in which data was collected were ones where computer and Internet access was being provided by a developmental agency (government or non-government). We estimate logit and multinomial logit models, using explanatory variables such as income, household size, education, and occupation, as well as infrastructure factors such as quality of electricity supply, and availability of telephones and televisions. Thus we are able to go beyond simple analyses of penetration at the country level, to understand the microEconomics of computer and Internet use in rural India. In particular, by examining patterns of use, we are able to comment on the importance of Network externalities for diffusion of computers and the Internet in these local rural contexts.
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Network Economics and the digital divide in rural south asia
2007Co-Authors: P D Kaushik, Jake Kendall, Nirvikar Singh, Kristen Williams, Yan ZhouAbstract:The concept of a 'global digital divide' is now common, and many cross-country studies of determinants of differences in computer and Internet penetration have been performed. The main conclusions and policy implications from these studies are relatively blunt: get richer, have more telephones, and regulate telecommunications better. In this paper, we examine an alternative approach to bridging the digital divide, through organizational innovations that provide low cost Internet access in developing countries, within the existing conditions of income levels, telecommunications infrastructure and regulatory environment. We use survey data from 500 individuals in three South Asian countries, Bangladesh, Nepal and Sri Lanka, to examine factors influencing patterns of computer and Internet use. These individuals were in situations where computer and Internet access has been provided by a developmental agency (government or non-government). We estimate logit and multinomial logit models, using explanatory variables such as income, household size, education, and occupation, as well as infrastructure factors such as quality of electricity supply, and availability of telephones and televisions. Thus we are able to go beyond simple analyses of penetration at the country level, to understand the microEconomics of computer and Internet use in rural South Asia.
Yan Zhou - One of the best experts on this subject based on the ideXlab platform.
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Network Economics and the digital divide in rural india
2007Co-Authors: Jake Kendall, Nirvikar Singh, Kristin Williams, Yan Zhou, P D KaushikAbstract:The idea of a global digital divide is well accepted, and cross-country studies of determinants of differences in computer and Internet penetration have identified income, telecommunications infrastructure, and regulatory quality as key influencing factors. The policy implications from these studies are relatively blunt: get richer, have more telephones, and regulate telecommunications better. In this paper, we examine an alternative policy approach to bridging the digital divide, through organizational innovations that provide low cost Internet access in developing countries, within the existing levels of income, telecommunications infrastructure and regulatory environment. We use survey data from 500 individuals in four states of India: Haryana, Madhya Pradesh, Punjab and Rajasthan, to examine factors influencing patterns of computer and Internet use. The situations in which data was collected were ones where computer and Internet access was being provided by a developmental agency (government or non-government). We estimate logit and multinomial logit models, using explanatory variables such as income, household size, education, and occupation, as well as infrastructure factors such as quality of electricity supply, and availability of telephones and televisions. Thus we are able to go beyond simple analyses of penetration at the country level, to understand the microEconomics of computer and Internet use in rural India. In particular, by examining patterns of use, we are able to comment on the importance of Network externalities for diffusion of computers and the Internet in these local rural contexts.
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Network Economics and the digital divide in rural south asia
2007Co-Authors: P D Kaushik, Jake Kendall, Nirvikar Singh, Kristen Williams, Yan ZhouAbstract:The concept of a 'global digital divide' is now common, and many cross-country studies of determinants of differences in computer and Internet penetration have been performed. The main conclusions and policy implications from these studies are relatively blunt: get richer, have more telephones, and regulate telecommunications better. In this paper, we examine an alternative approach to bridging the digital divide, through organizational innovations that provide low cost Internet access in developing countries, within the existing conditions of income levels, telecommunications infrastructure and regulatory environment. We use survey data from 500 individuals in three South Asian countries, Bangladesh, Nepal and Sri Lanka, to examine factors influencing patterns of computer and Internet use. These individuals were in situations where computer and Internet access has been provided by a developmental agency (government or non-government). We estimate logit and multinomial logit models, using explanatory variables such as income, household size, education, and occupation, as well as infrastructure factors such as quality of electricity supply, and availability of telephones and televisions. Thus we are able to go beyond simple analyses of penetration at the country level, to understand the microEconomics of computer and Internet use in rural South Asia.